Date: Mon, 8 Jun 2009 22:02:57 +0000 (UTC) From: Kip Macy <kmacy@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r193774 - user/kmacy/releng_7_2_fcs/sys/dev/cxgb Message-ID: <200906082202.n58M2vXK045613@svn.freebsd.org>
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Author: kmacy Date: Mon Jun 8 22:02:57 2009 New Revision: 193774 URL: http://svn.freebsd.org/changeset/base/193774 Log: further reduce coalescing threshold Modified: user/kmacy/releng_7_2_fcs/sys/dev/cxgb/cxgb_sge.c Modified: user/kmacy/releng_7_2_fcs/sys/dev/cxgb/cxgb_sge.c ============================================================================== --- user/kmacy/releng_7_2_fcs/sys/dev/cxgb/cxgb_sge.c Mon Jun 8 22:02:30 2009 (r193773) +++ user/kmacy/releng_7_2_fcs/sys/dev/cxgb/cxgb_sge.c Mon Jun 8 22:02:57 2009 (r193774) @@ -234,14 +234,14 @@ check_pkt_coalesce(struct sge_qset *qs) fill = &sc->tunq_fill[qs->idx]; /* - * if the hardware transmit queue is more than 3/4 full + * if the hardware transmit queue is more than 1/2 full * we mark it as coalescing - we drop back from coalescing - * when we go below 1/4 full, this provides us with some + * when we go below 1/8 full, this provides us with some * degree of hysteresis */ - if (*fill != 0 && (txq->in_use < (txq->size>>2))) + if (*fill != 0 && (txq->in_use < (txq->size>>3))) *fill = 0; - else if (*fill == 0 && (txq->in_use >= (txq->size - (txq->size>>2)))) + else if (*fill == 0 && (txq->in_use >= (txq->size - (txq->size>>1)))) *fill = 1; return (sc->tunq_coalesce);
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